Nozzle for atomizers



May 31,1927. 1,630,278 J. s'nmss NOZZLE FOR ATOMIZERS If'iled July 25. 1924 Zlmnnkoz Jacob ,S'tdm'ss.

Patented May 31,1927.

UNITED STATES TENT OFFICE;

JACOB STIRISS, OF NEW YORK, N. Y., ASSIGNOR TO IJARVEX CORPORATION, OF

BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

NOZZLE iron Application filed July 25,

This invention relates to nozzles for atomizers and particularly to nozzles that are used in producing a fine spray from a liquid that will emerge from an outlet in the form of a cloud and the object of-the invention is to provide means for keeping the liquid outlet open where solids are in suspension and to give the outgoing liquid a rapid gyratory movement before it is forced out of the vent in the nozzle.

Another object in the invention is to so fit and force the parts together that leather or other packing, which deteriorates, may be dispensed with yet the parts are Water tight and readily assembled without the aid of tools and with the minimum of skill and finally certain passages are so located in the nozzle at a point that the liquid will drain therefrom when the device is at rest and where the liquid on evaporation will leave no deposit.

These and other objects and details of the invention are more fully .described in the following specification, set forth in the appended claims and illustrated in the accompanying drawings; wherein:

Fig. 1 is a side elevation of an atomizer showing the improved nozzle applied thereto.

Fig. 2 is an enlarged sectional view through the nozzle.

Fig. 3 is a plan and end view of the outlet cap. I

Fig. 4 is a plan view of the outlet shell for gyrating the liquid.

Fig. 5 is an interior view of said outlet I shell.

Fig. 6 is an exterior face view of the same. I

Fig. 7 is aside elevation of the head for the outlet tube.

Fig. 8 is a front View of the same. Figures 9 and 10 represent sections taken near the periphery of the shell shown in Figure 5. These views show the manner in which the opening is formed in the end of the shell so as to produce an opening which is closed in a direction parallel to the axis of the shell and is substantially tangential to the interior of the wall of the shell.

. In atomizers of the character to be hereinafter described and where very minute passages and outlets are employed these pas- ATOMIZERS.

1924. Serial No 72:5,229.

to become ob solids like powders liquids or by salts that are held in suspension and that are liable to remain in the nozzlewhen the liquid evaporates.

This objectionable feature is overcome to some extentby making the parts detachable so that they may be taken apart and cleaned but in screwing the parts together again washers of leather or other packing have been used to prevent therleakage that the internal pressure produces but such packing must be renewed with each separation of the parts and skill is necessary to complete the re-assembling.

To produce the whirling and gyratory movement of the liquid just before its discharge as a spray it has been passed through spiral channels of very minute dimensions but the present invention employs preferably but one outlet and guiding means to assist the liquid in its gyratory course before leaving the outlet as a spra The nozzle is attached to the outer end of a tube 10 having the loop or bend 11 that is for the insertion of the finger of the operator and said tube besides being for the passage of liquid from a bottle that the stopper 12 is designed to fit, is also a piston rod for a piston in the cylinder 13 having an inlet tube 14 that is adapted to extend to the bottom of said bottle.

At the end of the tube is ahead 15 whose neck 16 is shrunk on or otherwise secured to the tube, fitting against the flange 17 and having a tapered forward extension 18.

oosely secured and swivelled on the head 15 by means oft-he flange 17' is anut 19 having interiorscrew threads a short distance'back of its forward end and having its outer surface knurled or roughened for manipulation when being rotated on the head but having clearance from the extension 18.

The interior screw threads of the nut 19 are adapted to co-operate with external threadson the outlet cap 20 having a fine orifice 21 and tapered on its interior to fit the tapered extension 18 and be drawn and jammed thereon by the nut 19 to form a practically Watertight closure so that no liquid will escape except through the orifice 21. The close fitting of the cap on'the head will render any other packing between these parts unnecessary as the angle of taper of .the two parts is identical and the fit is perfect.

. The assembling and separation of the nut and the cap is brought about by the rotation of the nut only and the cap is held 1 stationary by-the operator so that the cap and its contents may be retained in a fixed relation with the tube both while the nut is binding it in place or releasing it;

Withinthe cap 20is located a shell 22 having an open inner end and a rearwardly extending stem. 23, while at the edge of its face is a circular beading or pathway 24 rising above said face spirally and beginning the cylindrical wall of the shell.

The operation of forming the opening 27 in the sheet metal shell is shown in Figs. 9 and 10 where in the former the beading 24 is shown with an abrupt declivity' 29 that is adapted to be sheared by a tool and carried down to form a lip or extension'28 .to the beginning of the incline ofthe bead 24 and at the same time provides the opening 27 By this means the water or liquid that is discharged from the shell is absolutely prevented from following an axial direction but can only escape tangentially and up and around the beadin 24.

As will be seen in Figs. 3 an 4 the upper side of the cap 20 and the flattened surface of the stem 23 are provided with the word Top.so that when the parts are assembled the outlet 27 of the shell 22 will be position'ed -at the upper part of the shell, so

that, after use, the liquid with' its solid contents will drain towards the bottom and v leave no residue in the outletif the liquid should evaporate;

The chances of obstruction andclogging j of'the use of sheet metal entirely in the make up of the invention and no castings and finishing of the same 1s necessary. The

parts are reduced to the minimum and readily assembled or separated as described.

It will be seen that the nut 19 is not threaded at its inner edge but is left blank so that the cap may be" properly located at an opening 27 from the inside of the shell so that the liquid ejected therefrom will travel around the bead and within within the same so' that the threads begin to operate to draw the cap inward;

VVhat I claim as new is:

nation of a tapered head at the end of a tube, a correspondingly tapered cap having a discharge orifice and screw-threads, a nut swiv eled on the head 'and adapted to engage'the threads'of the cap to force .it on the head, and an inwardly opening frusto-conical shell disposed within said cap and corresponding in taper therewith, the shell being of larger diameter at its closed end than the outer endlof the cap, whereby the shell is forced into water tight enga ement with the cap when liquid. is forced against the inner side of the shell, and the closed ends'of said shell and cap being in spaced relation to provide a whirl chamber, said shell having, in its closed end an opening which is closed in a'direction parallel to the axis of the nozzle and shell and is tangential to the wall of said whirl chamber.

2. In a nozzle for atomizers, the combination of a tapered head having a flange and located at the end of a tube, a correspondingly tapered cap having an orifice i and 1. In a nozzle for atomizers, the combiscrew-threads, a nut swiveled on the flange and draw it on the head, an inwardly opening tapered shell corresponding with the taper of the cap and adapted to fit within same so as to leave a whirl chamber between their end walls, said vshell having, in its closed end an opening which is closed in a direction parallel to the axis of the nozzle and shell and is tangential to thewall of said whirl chamber, and a-circular inclined track leading from said opening toward the open end of the shell and adapted to cooperate with said opening to impart a whirling mo-' tion to the liquid discharged through the openmg. 3. In a nozzle for atomizers, the combination of a tapered head at the end of a tubeand having an annular flange, a correspond-- and adapted to engage the threads of the cap ingly tapered cap having a discharge orifice and exterior threads, a nut swivelled on the flange and adapted to engage the cap and draw it into water tight relations with the head, an' inwardly opening frusto-conical shell-adapted to engagethe interior of the cap in water tight relation and with the closed ends of the shell and cap spaced from one another to provide a whirl chamher, when liquid pressure is applied Within the shell, said'shell having an opening which is closed in a direction parallel to the axis i l of the nozzle and shell and is tangential to the wall of said whirl chamber, anda spiral heading on the outer face of the shell beginning at the said opening and terminating as a shoulder penetrated by said opening and having an interior lip.

4. In a nozzle for atomizers, the combination of a suitable head through which liquid is adapted to be fed, a circular cap carried by the head and provided with a centrally disposed discharge orifice, a shell positioned within the cap and having a closed end spaced from the closed end of the capto form a Whirl chamber and which closed end of the shell is provided with an interior substantially helical channel terminatin in a shoulder which is, cut away provi ed an opening which is closed in a direction parallel to the anis of the nozzle and shell and'is tangential to the wall of said whirl chamber, said helical channel being adapted to cooperate with the tangential opening to impart a whirling motion to liquid discharged through such openin into the whirl chamber between the close end of the shell and the closed end of the cap.

In testimony whereof I hereunto aifix signature. Y

J AGOB STIRISS. 

